发明名称 |
DISK DEVICE, HEAD CONTROL DEVICE, HEAD CONTROL METHOD, COMPUTER-READABLE STORAGE MEDIUM, AND PROGRAM THEREFOR |
摘要 |
A disk device or a head control device having a function of protecting data stored in a medium (2) against a magnetic field from the outside. The device comprises a magnetic sensor (5) disposed near a head (3) for measuring the external magnetic field, a sensor signal processing unit (6) for processing a sensor signal from the magnetic sensor (5) and judging from the sensor signal whether or not the intensity of the external magnetic field exceeds a predetermined intensity, and a head control unit for so controlling the head (3) as to move it from the data−written region of the medium (2) when it is judged by the sensor signal processing unit (6) that the intensity of the external magnetic field exceeds the predetermined intensity.
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申请公布号 |
WO03058621(A1) |
申请公布日期 |
2003.07.17 |
申请号 |
WO2001JP11684 |
申请日期 |
2001.12.28 |
申请人 |
FUJITSU LIMITED;WADA, HIROKI;SUGIYAMA, OSAMU;HARADA, TAKETSUGU |
发明人 |
WADA, HIROKI;SUGIYAMA, OSAMU;HARADA, TAKETSUGU |
分类号 |
G11B5/00;G11B5/012;G11B5/11;(IPC1-7):G11B21/21 |
主分类号 |
G11B5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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